It’s indeed that simple! There are six sites, each dedicated to a specific humanitarian need, which you can visit every day and with just a click you will help making a difference in this world.
Each site is focused on a specific need and allows supporters to benefit leading charities with simple, everyday online actions such as clicking to give and shopping to give more. That goodwill translates to funding for established nonprofit organizations that implement vital programs and initiatives.

When you click, they display ads from site sponsors. 100% of the money from these advertisers goes to charity partners, who fund programs to provide food to the hungry, free mammograms to women in need, healthcare and literacy to children, to save the rainforest and to provide food to rescued animals.
Their store gives a portion of every purchase to charity partners as well.

Here they are:

The Hunger Site
Providing food to hungry families is just the first step to solving the world hunger crisis.

After each click you have given the value of 1.1 cups of food to the hungry.